# Uniform attractors of non-autonomous Kirchhoff wave models

## TL;DR

This paper proves the existence and stability of uniform attractors for a class of non-autonomous Kirchhoff wave equations with strong damping and supercritical nonlinearities, showing their behavior under perturbations.

## Contribution

It establishes the existence and upper semicontinuity of uniform attractors for perturbed Kirchhoff wave models with supercritical growth nonlinearities.

## Key findings

- Existence of compact uniform attractors for each perturbation parameter.
- Upper semicontinuity of attractors with respect to the perturbation parameter.
- Applicability to supercritical nonlinear growth conditions.

## Abstract

The paper investigates the existence and upper semicontinuity of uniform attractors of the perturbed non-autonomous Kirchhoff wave equations with strong damping and supercritical nonlinearity: $u_{tt}-\Delta u_{t}-(1+\epsilon\|\nabla u\|^{2})\Delta u+f(u)=g(x,t)$, where $\epsilon\in [0,1]$ is a perturbed parameter. It shows that when the nonlinearity $f(u)$ is of supercritical growth $p: \frac{N+2}{N-2}=p^*<p<p^{**}=\frac{N+4}{(N-4)^+}$: (i) the related evolution process has a compact uniform attractor $\mathcal{A}_\ls^\e $ for each $\epsilon\in [0,1]$; (ii) the family of uniform attractor $\mathcal{A}_\ls^\e $ is upper semicontinuous on the perturbed parameter $\epsilon$ in the sense of partially strong topology.